Vitamin D supplementation improves testicular function in aging rats induced by D-galactose

Objective To investigate the effects and potential mechanism of vitamin D supplementation on testicular function in aging rats induced by D-galactose.Methods The aging rats were induced by D-galactose with subcutaneous injection. The animals were randomly divided into6 groups:aging rats (DG), aging rats with low-dose vitamin D supplementation (LD), aging rats with highdose vitamin D supplementation (HD), normal control rats(NC), normal rats with low-dose vitamin D supplementation(LN), normal rats with high-dose vitamin D supplementation (HN).